Jar-molding machine.



W. LEWIS. JAR MOLDING MACHINE. APPLICATION PILE D MAR.15, 1912.

' 1,113,795. Patented 0012.43 2314.

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mvmvmm WITNESSES 60 flaw - W LEWIS.

JAR MOLDING MACHINE.

APPLICATION FILED MAR.15, 1912.

' Patented Oct. 13, 191

4 SHEETS-SHEET 2.

IN VE N TOR W. LEWIS. JAR MOLDING moms. I, APPLIGATION FILED MAR lFh1912. Li13,?9 Patented 0013.18, 1914.

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QcQfi MM ATTORNEY W. LEWIS JAR MOLDING MACHINE.

v APPLIGATION FILED MAR. 15, 1912.

1 j 1 Patented Oct. 13, 1914.

4 SHEETS-"SHEET 4.-

TooZZ whom it may cortcero;

wvith the anvil and a,

' 'irovi de simple r: rim

i r m i il JEQ AN "51, Q32 FHILAHIQLPEXA, Plillhl' vlili liit, At'iOlE-EPQlElA Jeri-immineii -mourns.

destination filed March 1E, 1815 3. lilo.

Be it known that l, ipi nso Lewis, a citizen of the United Etetes ofAmerica, residing in the city and county or Philadelphie, in the Stoleof Pennsylvziiiis, hove invented a certain new and useful improve mentin Jonhliolding Machines, of which the following is at true and exactdescription, reference being had to the sccoiripai'iying drawings, whichform a part thereof.-

My present invention relates to molding machines of the hind known asjzirrers or ilpectficotion Letters l eterit.

jar molding machines in which a mold support carrying the pattern,iiaslr. send or other mold forming material is first lifted above andthen allowed to drop back 'nto collision With an anvil the. shock ofcollision being relied upon to compact the send or other mold formingmaterial about the patterns. In the operutionof a jar molding machine,the compacting of the sand or other mold formin'g material depends uponthe change in velocity of the mold support on impact with the anvil andthe compacting efiect needs to be varied in forming molds didering incharacter and, also for the best effects, in forming some kinds ofmolds, during different stages in single mold forming operation. 5

In molding machines in which compressed air or other pressure lluid isemployed to elevate the mold table above the anvil, the force of theblows struck maybe readily varied by varying the distance through whichthe mold support falls into collision similar regulation has beenobtained With molding machines in which the mold table is lifted shovethe anvil. by ll cam or analogous mechanical provisioiis by adjustingsuch camper provisions to vary the height to Which the mold table islifted preparatory to each drop.

The object of the present invention is to and effective apparatus forobtaining blows of varying intensities in the ope *ation of jar moldingmachines in which the mold table is lifted 2L definite end in-- variabledistance shove the anvil prepare tory to each collision. This Iaccomplish by the novel means which I employ for:

"3 i. e 4: I .12 so n-seer limo itch ilfi llik,

varying the sieceleretion. ivith which the mold support approachesanvil.

in the accompanying drawings and descriptive matter It hm illustratedand described some oil the 11214 firms of eppfira' on may he successfully carried out. N

Of the drawings, l igure l elevation cwhine embodying one tion. lie. isit no 9-42 (3% Fig 1. motion. :izelreii similar rim of apparatusdifshown in Figs. 1 v Lionel ele *z'ztion oi. u iine'enihodying ,1 5 1isectional of e iir molding form of my sectional ele Fig, 3 I to Fig.fering end l third form o my present invention elevation of at fourth fn oi molding mzichine embodying my pr ent invention Fig. (5 is anelevation taken at right angles to Fig 7 is on elevation of a moldingmachine ei'iihodyir e fifth form of my in 8 is a partial sectional ele"volition; Fig. ration of a molding machine diil'eringin form sligo tlyirom that shown by Figs. 1, 2 and 3. Fig. 9 is a diam-en). illustratingthe manner in which the rotating com for septiroting and regulating theapproach oi the mold support and anvil may he replaced by iiv crankshaft and connecting rod. Fig. 10

an elevath partly in tion oi? a molding mmrhinc provided lVJ'Q-ll. acrank shaft and connecting roc' tor se mrsting and regulating theapproach of the mold support and envih and l 11 is an elevation when atright-i i0.

in F .7 1, iepre :iry anvil of it 3212' mo anvil A. being. formed on"ass a sleeve-like extension A Q its the statioir machine the upper sideWith which enters and serves to guide the cylii'ider portion B of themold tehle ii. The lower end of the lindei' portion Pi is enlarged toform 21 trilring portion ll which in'i 'iinges against e anvil oncollision, and the table proper tie cylinder portion B thereof areconnected by vertical strengthening ribs B 11 post 3*, which be securedto the underside of the table ll, and is axially "is posed Within thesleeve portion. A or" the troller ll from a suitable source of current.

support the distance be The post B carries anti-friction roll B at itslower end. The roll B bears against the periphery of the cam C, and therotation of the latter alternately lifts the mold table above, and thenallows it to fall back into engagement with the anvil. The com 0, in theconstruction shown in Figs. 1 and 2, unlike the somewhat similar camsheretofore employed for the purpose of lifting the mold table above theanvil, is not intended to move cleur of the post 13* after lifting theletter to the upper limit of its movement, and then remain out ofengagement therewith until after the following blow is struck,

but on the contrary, is intended to remain in Contact with the post Band to support a. fraction of the weight of the mold sup-- port and itsiced during all or a portion of the falling; movement of the mold table.

The peripheral portion l--2-3 of the cum engages the end of the post andraises the letter from the position showing in full lines in 9. to theposition shown in dotted lines in that figure in which the high point 3of the com is uppermost. lhis portion of thecumcontour should bedesigned in the usual way to properly distribute the work of lifting themold support and its table throughout the period of time required forthe point to travel from the position shown in full lines in Fig. 2 intothe position occupied by it when the cam is in the dotted line positionshown in Fig. 2.

In general, in order to avoid unnecessary shock on the powertransmitting mechanism consider it desirable that the acceleration ofthe mold support during each drop should be uniform from the beginningto the end of the falling movement, though this uni-- formity is notessential, and in some cases, it may be advantageous to allow theacceleration to increase during the latter portion of the felling"movement.

To obtain. uni orrn accolcr-tion while the arc 3-.-- l-l of the cam ispassingnt lniform angular velocity under post .8 I so shape thisportion. of the coin contour that in such dowi'lward movement of themold teen the highest position and any intorm lute position ofthe moldsupport shall be proportion to tie square the snmlsr movement of the miccam occurring while the mold support is moving from its highest positionto said intermediate position. That is to-say if it represents thedistance between the highest and lowest positions of the mold supportand h the distance between the highest position and some intermediateposition of the mold support, and if t represents the angle 3.D-1, and tthe angle 3-D-Y through which the cum turns while the mold support ismoving through the distance it, then the relation between the uentitiesit, h, t and t necessary for unilorm acceleration under the conditionsstated is expressed by the equation in which g stands for theacceleration ofgrsvity and to for the minimum time during which the cammay turn through the angle t. t and consequently to, thus being fixed orknown the maximum or critical speed of rotation also becomes known, andwithin this limit, slower speeds will give less acceleration to thetable and consequently less velocity of impact against the anvil. Sincethis velocity is directly proportional to the speed of the cam, itfollows that the rumming; eiiect'of the impact must vary as the squareoi'the speed of rotation and that a.

great range in effect can be realized from a comparatively smallvariation in speed. It will thus be seen that by rotating the cam withthe proper angular velocity the velocity of approach of the mold supportand. anvil at the instant of collision can be made to correspond to thevelocity which the mold support would have if allowed to fall freelythrough any desired fraction of tho maximum distance of separationbetween the mold support and. the anvil. Thus, in the apparatus shown inFigs. 1 and 2 the mold compacting efiect of the blows struck oncollision may be varied as desired by varying the speed of the motor E.

In Fig. 3 I have shown at construction which I consider preferable frompractical standpoint to thcsomcwhat simpler muchinc shown in Figs. 1 end9. In Fig. 3 the connection between. the cum CA and the mold support Bcomprises a strut G. The lower end of the strut G carries an anti--friction roll G and is link connected to the anvil by means of the pivotA and the :mmegz ee mad he mm H between the gear Wheels M and M end Menlarged head 1s shrlmgly and E smce the teeth of these gears arepareeweo. m he 1131i guide sleeve pornon AZ, exile to accommodate thereiatlve movements and :1 spring head and to make the consider it isinterposeci between the the mold support. In order lifting action moredirect I ndmx ltz'oous to piece ighe axis in the chrection between thesetwo gear The gear Wheel M as shown, has its teeth elongated sufficientlyeratlve engagement the gmfiy one side of the M and E regardless of theordinary up and 1mm in Fig The contour made necesi spioeemeni; "tende todown movement of arid the movement of to the :mvii as the spring; Lchanges,

' fhe'meehine shown in Figs. and fiis oi the floating anvil AA the shaftDA relative eompzession the eh'sion in some eemis to l5 operation,manifest difi'erem provisions from. those shown in 0 1011 of ohiectiomhle Fig. foz' aecommodoting the rele-tivemovenn, ments heizweenthe envil a. 1d the base Withobviously not out disturbing the operativeconnections he- With jar moidtween hhe cam. shaft oez'ried by file anvil9e loch. is swim.- and ehe driving motor mounted on the base,

Figs. 1 ano .5 fol with. a machine "type patented. in my 9, ted Novemberm'wii proper is sup- .t on Jion and. in op lenize .hhe't on. mold.support h whole 0 in As shown in Figs. journaled in the, anvil AB portso com *3 at side of the anvil. finch com S is e gehhy a roll N pivotefito one end of a .ievt: N. The other end of each levee I? is pivotal 1yconnected at N to e plun 'ei' M WOJfklHi-j for .9113 in the uppel1713311? "the anvil. AB nef supported by a swing M mouneed in and hm;equal use of ehe shoehileee No, P

tea .lse and is so used 'meihee with the carried by in thepn'xeehin redby hlg; In the horlzonfiei a variable speed (having mm; ')1' n0 cylinderportion J of the hose member J.

1 With the construction shown in Figs. 5

and it .wiil be apparent that'pmctically {he some he advantages in theeo-n-- e ween the cam and mold support nee, as are h construe anvilwhich is ver-- h secured.

' or J formed 111 1 AA is sup- 0 L 1 lmemoseo between As shown. arereceived pmfpose m the obi:

for the I she i exlensleo A. 1021 SIIOWD. 1n F151;. 2J3. be apparent moThu shaft has eealso that the up "em-em; of

" the anvil Within. 1 ppl'oem b1 :1 her D and.

will 11.06 mirween the :ticuIe-r will Iv to affect hewoen the gear thedisltmlco 1 and m p- Fee 0 1 gugem emf;

, m or. and

by against 0 wise the mold power rmlihiplying' lever on meme 111:1; heeulpi oyed, as t gzgie :nvrzugzgemont support; mrious d link arrange forinstance, the shown in Fig: 7. In thie figure the mold support ispivotally CORMQCfiGCi of; P, P to two'shnilar links These links arepivotally connected in, Lrm to two other links: P which are pivotnHyconnected to the anvil at P At the. column] pivotal conneceion betweeneach cr. r1'e-*-pon ling h'nh; I there anti '1 roH P" which ed, in. the

or Wheel driving E :1, vmfiehle speed 1 ho -e niemher J to insure anop-- between it and. the gears 5 and 6 the cam shaftof the anvi]. sud.erwlty. Between. he ends each 193 91 rd form of I comlecteefi by a h k Ue trunnion 13d moderation B formed on the eerie Y o'u'tiing side of thismoei'mnism the mold snppoisi't. The t LU carries sheekless machine otone em} a 5211 :1 D which hat the periphery of the operab the shoeh'lesskind but embraces somewhat 311g cam CC carried on the driving shaft Thecam CG must have its contour shaped to prf'cvide a pair of similarrising portions C and a pair of similar descending portions 0 and in theform shown, each rising portion 0 and the""s.djacent descending portionC coiiperates with one of the rolls P during one-half turn of the shaftD in bringing about one elevation andregulating one falling movement ofthe mold support, and cooperates with the other roll I during the nextone-half turn of the shaft to regulate a second elevation and fallingmovement of the mold support.

' The arrangement shown in Fig. 8 differs from that shown in Fig. 3mainly in the fact that the connecting rod-like member G and theswinging guide link I of Fig. 3 are replaced in Fig. 8 by a plungermember Q guided for simple reciprocatory movement in the mold support.The weight of the mold support is transmitted to the member Q, by aspring Q, and the member Q, carries an anti-friction roll Q which ridesupon the operating cam C.

It is possible to replace an ordinary cam with ascending and descendingportions for separating the mold support and anvil and regulating theirsubsequent 'movement of approach in the manner hereinbefore described bya rotating crank pin or eccentric, and a connecting rod between thiscrank in or eccentric and the mold sup port. his will be apparent fromFig. 9, in which the closed curve (1 represents the outline of a camcarried by the shaft D such as the cam .GA. of Fig. 3. It will beobserved that this curve does not depart far from a circle 0 having itscenter at the point C. This circle 1s so drawn more- Y over as to reduceits departure from the descending portion of the cam toa relativelyinsignificant amount. In consequence, if the shaft D were provided withan eccentric or crank pin having its center at the point C and connectedto the mold support by a suitable connecting rod, the mold support wouldbe given movement's relative to the anvil in which the shaftisjo'urnaled, substantially similar to those obtainedin the machineshown in Fig. 3, for instance, by the use of the shaft D, cam CA. andoperating connections between the cam and the mo d support.

n the machine of this type shown in Figs. 10 and ll'the operating shaftR, j ournaled in the anvil AD, is provided with a crank R. A connectingrod S journaled on the crank R is'pivotally connected at in the anvil,the latter is divided into two parts connected by bolts A As shown theanvil'AD is of the floating type and is mounted in a support J A similarto the support J of Fig. 4. In the machine shown in Figs. 10 and 11 theshaft R carries a ulle'y R which is coupled as by the belt to a.pulleycarried by a counter-shaft T. The lattenmay be driven at variablespeeds from "the constant speed driving shaft- U by means of a belt Tcoupling the pulley cones U and '1" carried by the shafts U and Trespectively.

In the operation of such a machine as that shown in Figs. 10 and 11, theacceleration of approach of the mold support and anvil, in general, willnot be absolutely constant throughout each movement of tip preach. Thevariation need not be Large, however, and the transmission of the shockto the driving'shaft due to this variation is minimized by the spring Sinterposed between the crosshe'ad S and the mold support.

pin arrangement may be employed as shown in Figs. 10 and 11, in lieu ofan ordinary cam to perform the same function in the same way, I intendthe term cam, used in the claims forming a part of this specification,to include such an arrangement.

In designing a machine of kind shown in Figs, 10 and 11 or indeed indesigning an ordinary machine in which a cam having ascending anddescending portions is em ployed, the parts should be so designed thatany appreciable variation in the acceleration of approach of the moldsupport and anvil occurring during any one movement of approach, whenthe crank or cam shaft is rotated at a. constant speed will be anincrease rather than a decrease in acceleration as the movement ofapproach proceeds. A. decrease in acceleration tends to impart a shockto the cam or crank shaft which an increase in acceleration does not. Ofcourse, in so far as the acceleration of approach varies during any onemovement of approach there is a departure from the simple relationbetween the speed of rotation of the shaft and the intensity of the blowstruck to which reference has been. made above. In any given machinehowever, it is a simple matter to allow for a slight dcparture of thekind mentioned and to oby tain the desired variations in theintensities.

scribed the best iorrns of my invention now.

known to the," those skilled in the art will understand that theinvention claimed here- Inasmuch as a rotating eccentric or crank L lib''w other .tlm n those Those ski also that cor din features of myinvention.

may sometimes be used with without a corrcsponding use of tures.

advantage Having now described my invention What I claim as no anddesire to secure by Letters Patent, is:

other festion with the anvil and mold support, of

niiechnnism for regulating the n'iovcmcnt of approach of the mold orWort and anvil comprising it com retarding said movement of approach.

2. In jur moldir s machine, the combinw tion with the anvil moldsupport, of mechanism for regulating the movement of approach 01'. themold support and anvil comprising" a. rotating com retarding saidmovement of approach.

3. In it jsr molding machine, the combinetion with tho anvil and-moldsupport, of mechanism for regulating the movement of approachterminating in impact of the mold support and anvil comprising arotating cam exerting s retarding force opposing the movement ofapproach, ssid cam being" so shaped that the retarding force exerted byit Will besubstzintially constant with a given speed of rotation duringone movement of approach but may be varied by varying the speed ofrotation of the cam.

4. In o jar molding machine, the conibinstion with the mold support andanvil of means for separating the mold support and anvil preparatory tocollision comprising a cam formed with sifsscending portion for movingthe mold support away from the; $111- vil and with descendingportion-for tnrding; the approach of the, mold support and anvil wherebythe intensity of the blows struck on collision may be varied by varyingthespeed of rotation of said cam.

5. In a jar molding machine, the combins- I tion' with the anvil andmold support mem bers, of a rotatable cam for lifting the mold supportshove the anvil and having a, portion of its cam surface shs pcd toretard the falling movement of the mold support, and means for rotatingsaid cum at variable speeds.

6. Ina jar molding machine, the combination with the anvil and moldsupport menihers, of a rotatable for lifting; the mold support above theanvil and having a portion of its cam surface shaped to constantlyretard the falling movement of the mold support, and means for rotating;said csm at variable speeds.

7. In. a or molding machine the combination with the mold support andanvil, of means for separating the mold support and anvil preparatory tocollision comprising a coin formed with an amending portion for movingthe mold support away from the an *i1 and with a descending portioniEor, retarding the approach of the mold support and anvil whereby theintensity of the blows" struck on collision may be varied by varyingthespccd of rotation of said cam, said del scending portion being soshapedthst the l. in 4 ar molding machine, the com bms- I accelerationof approach Will be, substan- 'tislly constant through the entiremovement of approach When the speed of rotation bit the cum remainsconstant during said movement.

tion with the anvil and mold support, of mechanism for separating themold support and anvil prepariltory to collision including a camjournsled in the anvil and a spring: for equalizing the reaction on thecam, said spring being subjected through the cam to a. tensionincreasing and decreasing as the reaction on thecam increases anddecreases during each separation of the moldsupport and anvil.

9. In a j ar molding machine, the combination with the anvil and mold suport, of mechanism for separating the mold support and anvil preparatoryto collision including a cam journaled in the anvil and a springinterposed between the mold support 1( In a jar molding machine, thecombination with the anvil and mold support of mechanism for separatingthe mold support and anvil preparatory. to collision including a can;journslod in the anvil, an oscillating member-engaged and oscillated bysaid cam, and thrust transmitting connections between said member andthe anvil and between said member and the mold support, one of saidconnections including a cushion spring.

11. In a jar molding machine, the combination with the mold support andanvil, of means for separating the mold support and anvil preparatory tocollision including a cam and a spring through which the separatlngthrust of. the cam is transmitted.

12. In a jar molding machine, the combination with the anvil and moldsupport, of mechsiriism for separating the mold support and anvilpreparatory to collision including 'a. cam journaled in the anvil, 'amember piv otally connected to the anvil and engaged and oscillated bythe'csm and serving to transmit the thrust of the cam t0 the moldsupport.

13. In a jar molding machine the combinationof an anvil, a. moldsupport, a cam; shsft journsled in the anvil, a cam carried thereby, amember pivoted to the anvil and engaged and oscillated by said cam, athrust 8. In a js'rinolding machine, the combinaand cams transmittingelement connected to said lever,

and a opri'ing interposed between said elemoms one? the mold. support.

14: In o jor molding machine, the combi" notion of an anvil formed witha hollow vertical guido, a mold support engaging said guido, a cam shaftjournaled in the anvil, a

cam carried thereby, a member pivoted to theonvil and engaged andoscillated by said cam, a thrusttmnsmitting element working; :1,

- WILF o Witnesses H. W. BROWN, R. RAYMomD PORTER.

